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Summit Trail Advisors, LLC: AMG position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Summit Trail Advisors, LLC on AMG, newest first. How the timeline and the estimate are built.

Summit Trail Advisors, LLC held 5,873 AMG shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 5,873 shares
    Change vs previous 13F -2,735 shares

    0.03% of the 13F portfolio, value $1,987,423.

    13F-HR 0001951757-26-001207 filed by Summit Trail Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 8,608 shares
    Change vs previous 13F +2,390 shares

    0.03% of the 13F portfolio, value $2,381,834.

    13F-HR 0001951757-26-000837 filed by Summit Trail Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 6,218 shares
    Change vs previous 13F -621 shares

    0.03% of the 13F portfolio, value $1,792,525.

    13F-HR 0001951757-26-000464 filed by Summit Trail Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 6,839 shares
    Change vs previous 13F +4,044 shares

    0.02% of the 13F portfolio, value $1,630,623.

    13F-HR 0001951757-25-001440 filed by Summit Trail Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 2,795 shares
    Change vs previous 13F +2,795 shares

    0.01% of the 13F portfolio, value $549,972.

    13F-HR 0001951757-25-001093 filed by Summit Trail Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2024-12-31
    13F 0 shares
    Change vs previous 13F -1,573 shares

    13F-HR 0001951757-25-000148 filed by Summit Trail Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

    Exited: the 13F for this period no longer lists the position.

  7. period ended2024-09-30
    13F 1,573 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $279,679.

    13F-HR 0001951757-24-001200 filed by Summit Trail Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).